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Finding the Fourth Proportional to 1,548.82, 2,136.91 and 876.59

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Solution

The fourth proportional to 1,548.82, 2,136.91 and 876.59 is: 1,209.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.82 : 2,136.91 = 876.59 : x
  2. Step 2: Convert to fraction form
    1,548.82/2,136.91 = 876.59/x
  3. Step 3: Cross multiply
    1,548.82x = 2,136.91 × 876.59
  4. Step 4: Simplify right side
    1,548.82x = 1,873,193.94
  5. Step 5: Solve for x
    x = 1,873,193.94/1,548.82
  6. Step 6: Final answer
    x = 1,209.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.